I (4-6-0)
classes
Driver diameter - 63" and greater

Key
"-" = complete number range
"≠" = incomplete number range
"( )" = assigned but never carried
Class System Numbers Builder Built Notes
I-1-a CNR 1500-1501 Cooke 1893 -
I-1-b CNR 1502-1503 CLC 1894 -
I-2-a CNR 1504-1506 CLC 1898 -
I-2-b CNR 1507, 1508 Baldwin 1895, 1897 -
I-3-a CNR 1509-1513 CLC 1899-1900 -
I-3-b CNR 1514-1521 ICR-M 1903-1907 -
I-3-c CNR 1522-1529 Manchester 1901 -
I-4-a CNR 1530-1534 CLC 1904 -
I-4-b CNR 1535 CLC 1903 -
I-5-a CNR 1536 Dickson 1901 -
I-5-b CNR 1537-1542 Dickson 1901 -
I-6-a CNR 1543-1546 Baldwin 1899 • first use of class I-6-a
I-6-a CNR 1543-1546 Baldwin
GTR-P
MLW
1898-1904 • second use of class I-6-a
I-6-b CNR 1547-1577 Baldwin
Schenectedy
ALCO-S
GTR-P
MLW
1898-1905 -
I-7-a CNR 1578-1582 GTR-P
ALCO-S
MLW
1901-1905 -
I-7-b CNR 1583-1588 GTR-P
MLW
1901-1904 -
I-8-a CNR 1589-1628 Baldwin
ALCO-S
GTR-P
MLW
1906-1907 -